Mathematics, 01.04.2020 07:58 elha20
“The 2011 Sleep in America® annual poll was conducted for the National Sleep Foundation by WB&A Market Research, using a random sample of 1,508 adults between the ages of 13-64. The margin of error is 2.5 percentage points at the 95% confidence level.”
Which of the following statements is correct?
Answers: 3
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“The 2011 Sleep in America® annual poll was conducted for the National Sleep Foundation by WB&A...
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